Truck-body hoist



May 15, 1923.

F. G. GIES TRUCK BODY HOIST Filed March 2, 1922 U HI} I T? W3 WIIHWMHm...

INVENTOR.

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A TORNEY.

May 15, 1923.

F, G. GIES TRUCK BODY HOIST Filed March 2, 1922 4 Sheets-Sheet 2INVNTOR.

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4 Sheets-Sheet s May 15, 1923.

.F. G. GIES TRUCK BODY HOIS-T' Filed March 2. i922 4 Sheets-Sheet 4 ATTORNEY;

, Patented May-15, 1923.

FRANK e. ems, or DETROIT, MICHIGAN, essrenon or onn-netr-mo 'ranvon-e.

NEURTON, OI DETROIT, MICHIGAN.

TRUCK-BODY HOIST.

' Application filed March 2, 1e22. seria1'1t .,540,e06.

To all "whom it may concern:

Be it known that'I, FRANK G. Grins, acitizen of the United States,andresiding at Detroit, in the county of Vayneand State 7 of Michigan,have'invented a new and Improved Truck-Body Hoist, vof which thefollowing is a specification.

.This invention relates to means for raising the front ends of the dumpbodies of vehicles, particularly the bodies of motor trucks, and itsobject is to provide simple and reliable device of this characterwhichmay be" controlled within; narrow limits, which can be constructed atmoderate cost, and which will not be liable to get out of order. s

This invention consists, in combination with the frame of the truck-andthe body therefor mounted on pivots supported on the rear end of theframe, of a tubular guide pivotally mountedon the frame at. the frontend of the body to swing in the "longitudinal vertical plane of theframe,

a rope drum'mou'nte'd bo-axially with said,

It also consists in a rope sheave mounted at the upper end'of the ramand a second rope extending from'the body over saidv second sheave tothe drum whereby the movement of the body relative to the ram ismultiplied.

It also consists ina slid-able clutch adapted to connect a driving shaftto either one of the two drum-actuating gears, a-screw connected to theclutch, a nut on the screw, and a guide for the nut with limiting stopsso as to cause longitudinal movements of the clutch to disengage thegears when the body has reached the limits ofits move- ,ments.

It'also consists to the body, to the tubular guide and to the ram and across head slidable on these k 22 and slidable thereon is a clutchmember rods whereby the hoist and body will always be held in properrelation to each other.

It further consists in the detailsof con-v struction illustrated in theaccompanying in guide bars connected drawings and particularly pointed..outfin' the claims.

vation of a portion of a truck equipped with this improved hoist.similar elevation of the hoist on a larger scale, someof the partsbeing'broken' away driving mechanism. Fig. 5 is a s'ectionon the line 55of Fig. 2. Fig.6 is asecti on' on the line 66 of Fig. 3. Fig. 7 is asideelevation of amodified formof hoist. Figs] 8 and 9 are sections on thelines 8+8 and 9 -9 ofFig. 7 respectively. Fig. .10 is a 7 section on theline"10-1O of Fig. 8. Fig. 11

is a plan of a vehiclechassis withthis im-j of. Fig. 12 is sideelevation thereof. Fig. 13 is a plan of the upper end of the hoist. fFig.14 is a detail. of a driving shaft. Fig.

15 is a section on the line 15- 15 oflFig. '11.

Similar reference charactersrefer to like parts throughout the severalviews.

I In Fig. 1 the side beams 1' ofthe' frame of ,the truck support thepivots 2 on which thelduinpingbody 3 is. mounted. The hoist is nountedon the cross bar l. of the frame 1 proved hoist mounted on the rearendther'e-J H and is, driven bythe shaft 5 which may .be connected toany desired source ofpower and driven-thereby to turn in one direction.Mounted on the bar 4 are two brackets 6 and 7 which support a shaft8 onwhichithe worm wheel'9 is mounted. On the bracket 7 is a shell 10 whichencloses the worm wheel and connected to thls bracket. is frame 11 havng a horlzontal extension 12,

as .shown in Fig. 4. The shaft 5 is jOur! nale'd in the extension 12 andcarries a bevel pinion 14: which mesheswith the bevel gears 15 and 16wliich are journaled in 'thislframe 11.

23' .carryingthe pins 24 adapted to enter Journaled in' the hubs ;ofthese gears, and in this fram'eis a vertical hollow shaft I f holes 25in one or the other bevel gear.

A tubular guide 26extends up fronrthis frame and within it is a nut 27on the" In the drawings,Fig. l isa side' ele--- nut 27 to move up ordown.

slot 3 ceive this cylindrical end 33.

threaded upper end 28 of this stem :20. l. handle 29 extends through theslot 30 urtlns guide. Thrust'beai'ings 31 may. be provided at the endsof the worm.

Secured to this shaft 8 between the brackets '6 and. 7 is a rope drum 32and mounted on these brackets and entirely enclosing the drum is acylindrical lower end of the support 34'for thetubular guide 35 of thetubular ram 36.

The brackets are formed with circular flanges 37 to re- The guide 35hasa cap 38' which carries a pin 39 on which the rope sheave 40 ismounted. A

rope 41 extendsfrom a plug 42in the lower portion of the, ram over thesheave 40 and to the drum As the rain is intended to slide up and down,itis provided with a longitudinal slot 43.to permit the passage ofthesheave 39.

A head 44 on this ram carries a pin 45 for the sheave 46. A bracket 47on the body 3 receives one end of the rope 48 which passes over thissheave 46 and down through the ram and support 34 to the drum 32.

Brackets 50 and 51 on the body support a pair of guide bars 52. Abracket 53 on the head 44 of the ram supports a guide bar 54 which isslidable in the bracket55 on the tubular'guide 35. A cross head shown in5 consists of a central collar 56 and .twoside arms 57 which receive thetrunnions 58 on the collars 59. The central collar is slidable on theguide bar 54 and the collars 59 are slidable on the bars 52.

hen the shaft 8 and'drum 32 are rotated to wind the ropes 41 and 48,each unit of circumferential movement of the drum at the centers of theropes will cause the ram to rise one unit because of the rope 41 and thelower corner of the body 3 to rise two units because of therise ofthesheave 46 and rise another unit because ofthe winding-of the rope 48.The bracket 47 will therefore rise three timesas fast as the she ave 46.

As the guide bars 52 slide up in the collars 59, the angle between thesebars 52 and bar 54 will change, but the distance be tween the adjacentend of the body 3 and the bracket 55 on the hoist will remain nearlyconstant so that the rope 48 will be nearly parallel to the axis of theram at all times. The ropes 41 and 48 may be of wire or fibre as may bepreferred.

Because of the worm 22 and worm wheel 9," the clutch 23 may bedisengaged at any position of the body 3 without danger of the bodychangingits position, the ,worm and worm gear acting as a lock on thedrum.

In Figs. 7 to 10 is shown a hoist adapted for light trucks. Thesefigures also disclose a truck body 60 having front extensions 61 whichproject beyond the hoist, the .body being formed with a recess 62 toreceive the hoist. The side bars 1 and crossbar 4 of the frame of thevehicle are the same as above describedand on thebar 4 are mounted thebrackets 6 and 7 which support'the shaft 63 for the drum 64. This shaftis shown with a crank handle 65 at one end and its middle portion iseccentric to its journals so that the drum .64 will be revolved with itsteeth 66 meshing with the internal teeth 67 formed on theflange 68 ofthe bracket 7. The cylindrical lower end 33 of the support 34 ofthe.tubular guide 35 is again mounted on the flanges 37 and 68 as abovedescribed.

The brackets 69 which support the upper ends of the guide rods 52 arefitted to the curved wall of the recess 62 but otherwise this hoist issubstantially the same asthat above described and the same referencecharacters are employed to designate the same parts.

Vlhen the crank handle 65 isv turned in either direction, the drum 64rotates slowly inthe opposite direction,and because of handle to dumpabody having a fifteen hunwhich over-balance is seldom exceeded in thelighter trucks. In heavy trucks, the mechanicaldrive lStOwbG preferred,although the differential gearing shown in Fig. 10 can be soproportioned that one man can dump very heavy loads with the usual overbalance.

Instead of using this hoist to elevate the front ends of vehicle bodiesto dump them, it may be advantageously mounted. on the rear ends of thechassis, with or without a body, the chassis being provided with atransverse track 70 on which a base 7lis slidable. The sides 7 of thisbase are simi lar to those shown in the previously describedconstructions, and, as in Figs. '7 to" 10 inclusive, the shaft 63 may beturned by a crank handle.

In this construction the tubular guide-35 and the ram, are the same asabove described, as are also the head 44 and sheave 46, but the guide 54isoinitted as the reasonfor it is lacking. A yoke73 may be mounted onthe pin 39 and may have ears 74 to which llll) dre'd pound over-balancelat its'frontend,

the guy cables 7 5 may connect, these cables connecting to eye-bolts 76at the forward portion of the chassis 80. A pin 77 may be used to holdthe hoist at the desired point on the track 70. I t V Th shaft 63 mayhave a block 78 on its outer end and a fork 7 9 on the handle shaft" 81maybe pivoted thereto by a bolt 82. The I the loading of the truck andwhich when swung down leaves the truck body available for otherpurposes.

The details of construction and the proportions of the parts may all bechanged by those skilled in the art without departing from the spirit ofmy invention as set forth in the following claims.

I claim I 1. In a hoist, the combination of a horizontal shaft and arope drum mounted thereon, a guide pivoted on said shaft, a

ram slidable in the guide, a rope sheave at the upper end of the guide,a rope extending from the lower end of the ram over the sheave to thedrum, a sheave atthe upper end of the ram, and a rope extending from thebody over the second sheave tothe same drum. I

2. In a hoist, the combination of a horizontal shaft and a rope drummounted thereon, a guide pivoted on said shaft, a ram slidable in theguide, a rope sheave at the upper end of the guide. a rope extendingfrom the lower end of the ram over the sheave to the drum, a sheave atthe upper end of the ram, a rope extending from the body over the secondsheave to the drum,- and means to drive the drum in either (llrection.

3. In a hoist, the combination of a horizontal shaft and a rope drummounted thereon, a guide pivoted on said shaft, a ram slidable in theguide, a rope sheave at the upper end of the guide, a rope extendingfrom the lower end of the ram over the sheave to the drum, a sheave atthe upper end of the ram, a rope extending from the body over the secondsheave to the drum, reversing gears to drive the drum in eitherdirection, and means actuated by the reversing gears to disconnect thedrum therefrom when the ram has reached the limits of its upward ordownward movements.

4. In a dumping hoist for vehicle bodies, the combination of ahorizontal. shaft'and a rope drum mounted thereon, a guide pivoted ons'aid shaft, a ram slidable in the guide, a rope sheave at the upper endof the guide, a rope extending from the lower end of the ram over'thesheave to the drum,

a sheave at the upper end of the ram, a rope extending from the bodyoverthe second sheave to thedrum, a guide bar attached to a the vehiclebody, .a second guide bar 'attached at its upper end to said ram, meansconnected to the guidefor the ram to guide the lower endof the secondguide bar, and a cross head slidably mounted on said guide bars. I

5. In a dumping hoist for vehicle bodies,

the combination of a horizontal shaft and a rope drum mounted thereon, aguide pivoted on said shaft, a ram slidable in the guide, a rope sheaveat the upper end of the guide, a rope extending from the lower end ofthe ram over the sheave to the drum, a sheave at the upper end of theram, a rope extending from the body over the second sheave to the drum,a guide bar attached at its upper end to the ram, a bracket on the guidefor the ram in which bracket said guide bar is slidable, a pair of guidebars mounted on the vehicle body, and a cross head slidable on saidguide bars to position the hoist relative to the body.

6. In a dumping hoist for vehicle bodies, the combination of ahorizontal shaft and a rope drum mounted thereon, a tubular guide and abearing for the lower end thereof, a ram slidable inthe guide, a pivotedvehicle body, means connecting the ram and thedrum and the body wherebythe body may be elevated, a guide bar attached to "the body, a secondguide bar attached at its upper end to said ram,'means connected to thetubularguide for the ram to guide the lower end of the second guide bar,and a cross head slidably mounted on said guide bars.

7. In a dumping hoist for vehicle bodies,

the combination of a tubular guide and a bearing for the lower endthereof on which the guide may swing in a vertical plane parallel to theline of the vehicle, a ram slidably mounted in the guide, a rope toelevate the ram in the guide and a second rope extending from the top ofthe ram to one end of the body whereby that end of the body may beelevated, a pair of parallel guide bars mounted on the body, a third barmounted on the ram and guided by the tubular guide, and 'a cross headslidable on said bars to cause the hoist to swing toward the body asthat is being elevated.

8. In a dumping hoist for vehicle bodies, the combination of a tubularguide and a of the body whereby that end of the body may be elevated, apair .o'i parailel guide bars mounted on the bodyg a third bar mountedon the ramand guided by the tubular guide, and a cross head siidable onsaid bars to cause the hoist to swing toward the body as that is beingelevated, said cross head comprising a member slidabie on the barconnected to the ram and a pair of collars pivotally connected to saidsli'dable member and slidable on the bars connected to the body.

9. In a hoist, the combination of a base mounted on a vehicle chassis, ahorizontal shaft mounted on the base, a rope drum mountedon the shaft, ahoist pivotally mounted on said shaft and adapted to swing thereon andcomprising a guide member, a ram slidable therein, i'ope sheaves mountedon'the upper ends of the guide and ram, and a pair of ropes adapted tobe wound on the drum one of said ropes passing over each sheave, therope passing over the sheave on the guide connecting to the lower end ofthe rain, a dumping body mounted on the vehicle chassis, meansconnecting the rope passing over the sheave on the ram to said body, anda slidable connection between the ram and body.

FRANK- G. GEES.

